y knee jerk is rotational issues from a light bullet also...
If you "can't find any other bullets" you aren't trying.
https://www.midsouthshooterssupply.com/
Has just short of a Shyte-load in-stock, makes me wonder about how hard you are trying on your loads? Stop changing a bunch of stuff, one thing at a time. NEVER found a rifle or bullet, that didn't shoot well with a 32nd of jump. Seating depth gets over played, because of Litz's crappy bullets.

Remember also you have a mass produced factory rifle, don't count on a precision rifle proceed at $400.